Auditing the accuracy of a volunteer-based surveillance program for an aquatic invader Bythotrephes.
D000818:Animals; D033361:Cladocera; D003247:Conservation of Natural Resources; D004784:Environmental Monitoring / Q000592:standards*; D011157:Population Dynamics; D011897:Random Allocation; D015203:Reproducibility of Results; D013048:Specimen Handling; D014838:Volunteers